[Debian-eeepc-devel] wwan3g rfkill: Operation not permitted

[Thiemo Nagel]

Corentin Chary wrote:
> On Fri, Jul 10, 2009 at 3:35 PM, Thiemo Nagel<thiemo.nagel at ph.tum.de> wrote:
>> Corentin Chary wrote:
>>> On Fri, Jul 10, 2009 at 12:23 PM, Thiemo Nagel<thiemo.nagel at ph.tum.de> wrote:
>>>> I just tested the new GSM rfkill in 2.6.31-rc2 and I get the following on my
>>>> EeePC 1000HGO:
>>>>
>>>> eee:/# cat /sys/class/rfkill/rfkill2/name
>>>> eeepc-wwan3g
>>>> eee:/# echo 0 > /sys/class/rfkill/rfkill2/state
>>>> bash: echo: write error: Operation not permitted
>>>>
>>>> What could be the reason for that?
>>> Reading the kernel source I can find:
>>>         /*
>>>          * The intention was that userspace can only take control over
>>>          * a given device when/if rfkill-input doesn't control it due
>>>          * to user_claim. Since user_claim is currently unsupported,
>>>          * we never support changing the state from userspace -- this
>>>          * can be implemented again later.
>>>          */
>>>
>>> It seems that rfkill should be controlled by /dev/rfkill (cf
>>> Documentation/rfkill.txt).
>>> Maybe network-manager can control that .. But I'm not sure.
>>> Maybe you should CC the wireless mailing list.
>> Thanks for the quick reply.  The interesting thing is, that the direct
>> access works well for eeepc-wlan and eeepc-bluetooth rfkills.  I've CC'd
>> debian-eeepc-devel, maybe they know something.
>> 
> Are you sure that it works with newer kernels ?
> 
> This commit should have broken it for all rfkill.
> 
> commit 19d337dff95cbf76edd3ad95c0cee2732c3e1ec5
> Author: Johannes Berg <johannes at sipsolutions.net>
> Date:   Tue Jun 2 13:01:37 2009 +0200

You're right, all rfkills work with 2.6.30, but none works with 2.6.31-rc2.

For the debian-eeepc folks:  2.6.31-rc2 breaks bluetooth toggling using
eeepc-acpi-scripts, but WLAN toggling still works.

Thank you and kind regards,

Thiemo

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